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This wikiHow teaches you how to connect a Comcast cable box to a TV in the US.
Steps
Prepare to connect
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You need to make sure that the cable is installed. If a Comcast employee hasn’t come to your home to install the cable, you’ll need to call the operator and ask for it to be installed.
- You must have your account information and ID ready before you call Comcast.
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Check to make sure you have the correct cable. If it’s an HDTV, you’ll need to use an HDMI cable to connect the Comcast box to the TV; if not, you can use a standard A/V cable (red, yellow and white cables).
- Cable boxes usually come with A/V cables.
- You can buy HDMI cables for less than VND 345,000 ($15) online or at electronics stores.
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Turn off the TV and unplug it. Press the power button on the TV or remote control, then unplug the back of the TV.
- Keep the TV’s power cable plugged into the power outlet during installation.
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Move the TV away from the wall if possible. You’ll need plenty of space to mount the cable box, so move the TV and entertainment equipment (if any) away from the wall. You will have enough space to fit the cable box without bending the wires.
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Place the cable box near the back of the TV. You should think about where to place the cable box before you start plugging in the power cord to make sure the device will sit as expected.
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Turn the back of the cable box. You’ll find plenty of slots and ports; this is where we plug in all the necessary cables. You can now start connecting the cable box to the cable service and the TV.
Cable box connection
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Connect the Comcast coax cable to the box. Find the cable Comcast has installed (usually protruding on the floor or on the wall behind the TV) and plug it into the metal coax port on the back of the cable box. Then you turn the connector clockwise to tighten.
- The end of the cable will have a needle-like detail protruding in the middle.
- Cable boxes usually have coax cables attached. If Comcast hasn’t installed a cable, you can plug it into a coax wall port.
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Plug in the HDMI cable. This port consists of a wide and narrow end located behind the cable box. On most Comcast cable boxes, the HDMI port is usually located in the bottom right corner or bottom edge of the back of the box. [1] X Research Source
- If you are using an A/V cable, plug each end of the cable and the corresponding colored port on the back of the box (for example, a yellow cable will plug into the yellow port).
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Plug the other end of the HDMI cable into the TV. Find the HDMI port you want to use on your TV, and then plug the cable box into it.
- If you use a receiver that has multiple HDMI ports plugged into the TV, plug the cable box’s HDMI cable into the receiver as well.
- If you are using an A/V cable instead, plug the cable into the corresponding colored port on the back of the TV.
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Plug the cable box power cord into the electrical outlet. Plug the cable box’s power cord into a wall outlet or extension. You should choose a power source close enough to the TV so that the cable box can be placed near the TV without stretching or bending the power cord.
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Plug the other end of the power cord into the cable box. You’ll see a circular power port on the back of the cable box; Plug the other end of the power cord into this port.
- This input is usually located on the right side of the cable box.
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Plug the cable back into the TV and turn it on. The Comcast cable box will also start up, but you may need to wait a few minutes for it to be fully powered on.
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Change the TV’s input if necessary. Press the “Input” or “Source” button on the TV or remote control to convert the input (for example, HDMI 1 ) to the port where you plugged the Comcast cable box.
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Prepare your Comcast remote control. Insert batteries into the remote control, then proceed to connect the device to the TV and cable box. [2] X Research Source
- Instructions for the cable box and remote control may vary by model, so you should refer to the remote’s manual for how to synchronize with the TV and cable box.
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Activate the cable box. After the cable box is connected, you just need to activate the service again. To start this process, you can call Comcast at 1-855-652-3446, or visit the activation website at
xfinity.com/activate and log in. Advice
- An extension cord (or “surge protector”) behind the TV will allow you to organize your power sources without having to stretch the wires.
Warning
- You should always unplug the TV before installing the cable box, control panel, receiver or any other equipment.
X
This article is co-authored by a team of editors and trained researchers who confirm the accuracy and completeness of the article.
The wikiHow Content Management team carefully monitors the work of editors to ensure that every article is up to a high standard of quality.
This article has been viewed 1,369 times.
This wikiHow teaches you how to connect a Comcast cable box to a TV in the US.
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